Vulnerability · Published Aug 24, 2020 · Assigned by mitre
CVE-2020-24606
High 8.6
In plain English
A high-severity security flaw in the libecap package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.0% (higher than 92% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.6High
Exploit odds (30 days)5.0%top 7.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | libecap | 1.0.1-2.module_el8.6.0+2741+01592ae8 | ALSA-2020:4743 |
| AlmaLinux:8 | libecap-devel | 1.0.1-2.module_el8.6.0+2741+01592ae8 | ALSA-2020:4743 |
| Alpine:v3.20 | squid | 4.13.0-r0 | ALPINE-CVE-2020-24606 |
| Alpine:v3.21 | squid | 4.13.0-r0 | ALPINE-CVE-2020-24606 |
| Alpine:v3.22 | squid | 4.13.0-r0 | ALPINE-CVE-2020-24606 |
| Alpine:v3.23 | squid | 4.13.0-r0 | ALPINE-CVE-2020-24606 |
| Alpine:v3.24 | squid | 4.13.0-r0 | ALPINE-CVE-2020-24606 |
| Debian:12 | squid | 4.13-1 | DEBIAN-CVE-2020-24606 |
| Debian:13 | squid | 4.13-1 | DEBIAN-CVE-2020-24606 |
| Debian:14 | squid | 4.13-1 | DEBIAN-CVE-2020-24606 |
| Rocky Linux:8 | libecap | 0:1.0.1-2.module+el8.4.0+404+316a0dc5 | RLSA-2020:4743 |
Affected products (as reported)
References
- https://github.com/squid-cache/squid/security/advisories/GHSA-vvj7-xjgq-g2jg x_refsource_MISC
- http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_9.patch x_refsource_MISC
- DSA-4751 vendor-advisory, x_refsource_DEBIAN
- USN-4477-1 vendor-advisory, x_refsource_UBUNTU
- FEDORA-2020-73af8655eb vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-63f3bd656e vendor-advisory, x_refsource_FEDORA
- openSUSE-SU-2020:1346 vendor-advisory, x_refsource_SUSE
- openSUSE-SU-2020:1369 vendor-advisory, x_refsource_SUSE
- FEDORA-2020-6c58bff862 vendor-advisory, x_refsource_FEDORA
- USN-4551-1 vendor-advisory, x_refsource_UBUNTU
- [debian-lts-announce] 20201002 [SECURITY] [DLA 2394-1] squid3 security update mailing-list, x_refsource_MLIST
- https://security.netapp.com/advisory/ntap-20210219-0007/ x_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20210226-0007/ x_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20210226-0006/ x_refsource_CONFIRM